Chapter 28 Flashcards
(45 cards)
organ that secretes testosterone
Interstitial cells in seminiferous tubules
Secretes androgen binding protein
Sustentacular cells in seminiferous tubules
What does a increase level of testosterone result in?
Spermatogenesis, sex drive, development of secondary sex characteristics
Results in development of follicle, secondary sex characteristics, maintain body temperature, bone density, regulate production of cholesterol
Estrogen
Production of sperm within seminiferous tubules
Spermatogenesis
Diploid cells that remain dormant until puberty for males
Spermatogonia
What happens to the spermatogonia at puberty?
Begin dividing by mitosis
Undergo meiosis I and II to produce 2 spermatids
Primary spermatocytes
Located near the lumen of seminiferous tubules
Spermatids
Final stage of spermatogenesis
Spermiogenesis
Mature sperm, composed of acrosome cap, contains digestive enzymes, tail for locomotion, mid piece that contains mitochondria
Spermatozoa
Composed of seminal fluid from accessory glands combined with sperm
Semen
Alkaline fluid, fructose, prostaglandins, helps with going through the vagina
Seminal Vesicles
Citric acid, mucin, seminal plasm, prostate specific antigens,
Prostate gland
Mucin for lubrication
Bulbourethral gland
Substance that causes the vasodilation of erectile tissue, compress venules, increases blood flow
Nitric oxide
Period of time of intense feelings of pleasure and expulsion of semen
Orgasm
Occurs when sympathetic nervous system stimulates smooth muscles of the urethra
Ejaculation
Time where men cannot attain another erection
Refractory period
Oocyte + follicle cells
Ovarian follicle
Primary oocyte, single layer of flattened follicle cells
Primordial follicle
Primary oocyte + one of more cuboidal follicle cells = granolas cells
Primary follicle
Primary oocyte + many layers of granulosa cells + thecal cells + antrum
Secondary follicle
Secondary oocyte + many layers of granulosa cells + thecal cells + antrum
Vesicular follicle